Finding the Fourth Proportional to 2,661.32, 3,993.81 and 929.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.32 : 3,993.81 = 929.94 : x
2. Step 2: Convert to fraction form
   2,661.32/3,993.81 = 929.94/x
3. Step 3: Cross multiply
   2,661.32x = 3,993.81 × 929.94
4. Step 4: Simplify right side
   2,661.32x = 3,713,999.02
5. Step 5: Solve for x
   x = 3,713,999.02/2,661.32
6. Step 6: Final answer
   x = 1,395.55